Database Develop

[Q]

Well, my problem is that my phone won't recognize any computer as a computer, but only as a source for battery charging. when i plug it into a computer the battery starts charging but i don't get the USB sign.
the thing is that it used to work. i usually just pluged the phone in and it would work, and suddenly out of the blue it stopped working and i have no idea why. i've done nothing on the computer between the last time it worked and the time it stopped working, i wasn't even using the computer during that time, so it must be something on the phone settings, but i checked it a little and found nothing that looks like the problem, but i rly don't understand much about it..
any ideas?

It sounds like a driver issue.
If you're using a Samsung firmware, reinstall the drivers. This can be done by finding them online, or by installing Kies. If you're using CM7/Miui, Samsung drivers won't work. You'll need to uninstall Kies (or kill the process to make sure it's not running in Task Manager) and then install the Nexus S drivers. Again, a simple search will provide the files you need.
If it's not a driver issue, I really don't know what it could be. But I would definitely try reinstalling the appropriate drivers first.

Go to Settings>Applications>Development and if USB debbugging is flagged,deflag it!

upichie said:
It sounds like a driver issue.
If you're using a Samsung firmware, reinstall the drivers. This can be done by finding them online, or by installing Kies. If you're using CM7/Miui, Samsung drivers won't work. You'll need to uninstall Kies (or kill the process to make sure it's not running in Task Manager) and then install the Nexus S drivers. Again, a simple search will provide the files you need.
If it's not a driver issue, I really don't know what it could be. But I would definitely try reinstalling the appropriate drivers first.
Click to expand...
Click to collapse
I'm using a samsung firmware and i installed kies recently, though even after i installed it, the USB connection was still working for i while until it stopped.
should i reinstall the kies?
Nezys said:
Go to Settings>Applications>Development and if USB debbugging is flagged,deflag it!
Click to expand...
Click to collapse
It was deflagged, but thanks anyway

abialystok said:
I'm using a samsung firmware and i installed kies recently, though even after i installed it, the USB connection was still working for i while until it stopped.
should i reinstall the kies?
It was deflagged, but thanks anyway
Click to expand...
Click to collapse
Try with a different USB cable.
Sent from my GT-I9000 using Tapatalk

Try to reinstall Kies or one of the steps that I've read here:
http://www.androidgalaxys.net/suite...problemi-connessione-collegamento-usb-galaxy/
Translated:
Make sure you have installed the latest version of Kies (currently 2.0.1).
For owners of Windows Vista / Seven Kies launch in admin mode
Connect your phone to your PC using the default launcher from Samsung (TouchWiz)​​. Alternative launcher may not be recognized by Kies. Close any programs in the background on your phone and PC.
Make sure that in Settings> Wireless and Networking> USB Settings is selected Samsung Kies or Ask the connection.
If you already selected, try to choose any item and then set one of the two mentioned.
Try using another USB port on PC. Not all USB ports may be able to deliver the power needed to power the device.
Restart both the phone and your PC.
Try reinstalling the drivers of the Galaxy. To do this open Kies, go to the Tools menu and then install drivers.
Try using another USB cable.

ok, I tried everything but switching cable coz i know it works...
here's the weird thing: I tried connecting my phone to 3 different computers, 1 worked and the other 2 (including mine) didn't work.
the thing is that the other computer that didn't work and the computer that did work never touched a Samsung before, so basicaly i have no idea what would make one of them work and the other not to work.
I'm really confused.

Try going into device manager and see if there are any devices flagged with '!'
If not, find your samsung device from device manager, and uninstall it and delete all drivers, then reinstall them.
Try that. It may just be a windows issue, I've had similar problems before but not even with a phone, but a flash drive.

well, tonight the computer restarted itself because of some updates, now it seems to magicaly work, even though i restarted it before.
i have no idea y it suddenly started working, but i can only hope it wouldn't happen again.
thank you all, you guys are great!

USB issue

Hi,
I currently encounter a problem with my Optimus 2X.
I can use my usb port to load the phone but when I plug it in a computer (I tried with several computers running XP / seven / ubuntu ... and several cables). But my phone doesn't seems to be recognized by the computers.
I'm running 2.6.32.45 cyanogenmod. I wanted to go back to the original rom but my backup seems corrupted
Does anywone knows how I can go back to the original rom ? (hopping it will fix my usb issue ....)
regards.

Uninstall the old drivers, and download v3.6 from lg's site it has fixed this issue. =P
Sent from my LG-P990

Even if the coputer act like there is nothing plugged ? On several computer I used the phone wasen't recognized as a plugged peripheral (even a usb key).

I had the same problem, v3.5 of lg united driver was cqusing it , when I updated it got fixed just uninstall reboot and install 3.6 worked for a few more peps
Sent from my LG-P990

Thank's a lot it works perfectly !
I now encounter a new problem, when I try to update my phone using the LG software, it stops at about 30% (looks like it's impossible to connect the phone with the software).
Edit -> I've found an old stock rom and installed it on my phone : everything works perfectly thanks a lot !!!

Guys
I'm running CM Nightlies and I can no longer connect my phone to any pc via USB.
Some have said I would have to flash phone back to an original rom in order to fix then flash CM back over it?
Is this really only way as worried will lose all my internal drive stuff.

You can try to change your drivers it works very well !
If you wan to save your stuff without using USB you can use FTP thrue à WIFI to send stuff on your PC.

I got the same problem since about 4 months. When connecting the phone to the computer, no usb icon appears on the notification bar, also there is nothing happening in the device manager on the computer. Charging always works.
This is still confirmed after using different computers, different usb cables, different usb ports, and 4 different versions of the drivers (up to the most recent 3.6 drivers) even it should still show something even with no drivers. This also occurs in "software update" mode.
Also I tried different ways of plugging in the cable on the phone side (slow, fast, with pressure up/down/side).
This is with CM7, CM9alpha, and just for test also with MIUI.
The odd thing is, in this time span, it randomly worked about 4 times in these 4 months. Last time was just after I updated to CM9 alpha it worked the first time I plugged it in (was surprised with that), but it stopped working too.
For me it seems it's something with the usb chip set in the phone.
The problem here is, returning the phone for RMA will cause problems with CM on the phone, as they probably will say it's because of a custom rom, and there is no (easy) way to get stock rom with branding back on the phone (the only one maybe with a nandroid backup of stock from someone else?).

I'm having the same trouble as dedors. Absolutely no USB data connection. Can't get anything going in nvflash, smart flash, recovery, or when running normally. I've tried uninstall and reinstall the drivers, multiple cables, multiple computers, multiple OS including win7 xp and Ubuntu. USB debugging enabled, disabled, wiping the SD cards, trying with no external sd card. The only glimmer I've seen of it working was when I plugged it into my old XP laptop before and it prompted the computer to install a driver for the webcam that I'd mistakenly uninstalled. I tried cleaning out the USB port in case it had a bunch of lint stuck in it and the cable just wasn't sitting properly.
I don't know at what point it stopped working but it has had no serious abuse that could cause any physical damage.
Oddly it still charges just fine.
Can't return for RMA as it's running Cyanogen 9 and I've no easy way to get it back to stock. I also had this problem on Cyanogen 7. I could probably flash a stock rom onto the phone but I wouldn't be able to nvflash the original recovery.
A lot of people seem to have had USB trouble with this phone.
Happy to provide any logs that may help the diagnosis though you may have to explain how I can acquire them as I only know basic flashing.
Sorry for the lengthy first post, trying to be thorough.
Thanks in advance for any help offered.

I can't think of any solution to your problem (in my opinion it seems like a faulty USB port, it seems to be "popular"), but I can suggest you a workaround... it's actually the workaround I've been using cuz I also have trouble with USB... get an SD card and a USB to SD card adapter...
Or that ftp/wireless trick that was mentioned above, I actually don't know how to do this but I would definitely like to

Yeah that does seem to be the case. At least I can still flash roms and so on. So long as it lasts me the rest of the year I don't mind grabbing a new one then.
Anyone who knows about logs for trouble shooting, can you suggest a way that I might try to diagnose the problem. If I can be sure the port is stuffed and nothing I can do will fix it I'm ok with that but I'd like to know whether I should keep looking for solutions or give up on it.
Cheers.

Hello,
I've got a new issue with my phone updating CM10 and today it's impossible to boot.
I've tried to plug it on my computer in order to flash it but got the same probleme as the first post : nothing happened when plugged on my computers.
Does anyone got this 3.6 drivers somewhere ? seems that the new ones from LG didn't works ....

I have the same problem
I how bought my phone (LG P990), 6 months old, used. I come home and try to connect it to the computer and it won't be recognized. Somehow I manage over that code 1809 # * 990 # to enter the menu and play with the ports I was able to connect to the computer and do the official update to 2.3.4. over LG software.Once again, this comp will not recognize phone (only charging), but using code 1809 # * 990 # and tampering on port settings it was able to connect to the computer.
Now after some time do stupidity and Root my mobile phone(SuperOneClick) and install clockwork-5.0.0.3 and via zip CyanogenMod 9. I tried all the ways that exist but pc does not recognize the phone anymore. After some time, the official ICS update is coming, and now that you can not connect the comp how to update mobile phone. I do a recovery back to the official Android 2.3.4 (I had to change the partitions, 2.3.4 and ICS use different sized partitions) and I run a mobile phone that is again official 2.3.4 and try entering the menu (1809 # * 990 #) by tampering with ports settings I tried to make comp to recognize the phone but to no avail. I tried to change the usb cable, use a different USB port on comp but nothing, no response just recharging.
After googling I managed to find recovery from ICS V28g and I managed to install it to have a functional phone. I contacted 2 service both refused to accept phone because rooted. I tried all the tricks without battery holding vol + and - to enter into APX mode, nothing then Power and vol - S / W mode that worked but comp ga would not recognize until now even that does not work (appears LG logo and when S / W should appear then goes off) and all the other tricks that I found on the internet, reinstall the drivers, I do not know what else.
Oh yeah and I noticed entering the settings on mobu System Settings / About Phone / Software Information / Baseband version - unknown
Link to image-->h_t_t_p://s1.postimage.org/9317bfezz/2013_01_11_12_36_01.jpg

Hi,
I've found an old 3.6 driver, but nothing works even with it ... I think I must change my phone -_-

Computer doesn't detect P990 through USB

Ok guys I'm a noob around here. I've had my P990 for about 7 months and I'm ready to throw it against the wall:crying: I've been searching for info on this type of fault and I read that it happens pretty often. I really didn't have the need to plug my phone to my computer, so I never did, until about two days ago I decided I was bored with my stock phone and decided to install the latest version of android, so I downloaded the LG IV suite. Installed it, I'm following the directions, connect my phone and bam, NOTHING I kept getting an error on the LG suite, can't find phone, check connection and try again. At this time I also notices that my phone was charging through the USB cable. So my basic troubleshooting techniques kicked in, and performed the basic steps:
-Made sure Mass storage only box is checked
-Switched USB cable
-Re-installed the driver
-Downloaded the latest driver from LG website
-Downloaded drivers recommended by XDA
-Tried two other computers with two different OS
So none of this worked:crying:
After monkeying around for a couple of hours with my phone, I read somewhere on this forum to take out the battery, connect to USB cable to your computer, hold down the power and volume down buttons at the same time, this would put my phone in some mode, I don't know what that mode is, but decided to do it. My phone powers up, then I see the green android little man with a white box and an arrow coming out of the box. Ok, finish doing it's thing and then it reboots. I go into my phone and find that everything has been erased and the phone was back to it's original state when I received it over the mail.
Since my phone is back to stock, I decided to go the root road. Downloaded SuperOneClick, installed it connect my phone via USB and I'm back to step one. I get nothing!!! So then I decide to go the root flash road. So I downloaded the z4root adk file and put in the flash, pop the flash in my phone and nothing. Can't see my flash card on my phone (never used an SD card on my phone and decided to buy one for this instance). Kept reading on-line and found that I need a file manager application, so I installed Linda Manager on phone, opened the z4root adk file and installed on my phone. So now I'm getting very excited and I'm giggling like a school girl because I'm starting to see light at the end of the tunnel. So I run the z4root application and go with permanent selection, the application start the root, then BAMMMMMMM. The application just stops and my phone takes me to my home page. I decide to restart the z4root application and I can't get the app to run. I re-booted my phone, restarted the app, and keep getting stuck. The app stops and I can't never successfully get a root. I'm out of ideas, I've going at it with my phone for two day and reading on the net.
The two thing I want to accomplish is to be able to use my phone via the USB cable and to root my phone. Can you guys point me in the right direction. At this point I'm willing to try anything on my phone since everything got erased.
by the way here's is what stock I'm running on my phone:
Android version: 2.2.2
Baseband version: 1035.21_20110725
Kernel version: 2.6.32.9
Built number: FRG83G
LGE version: LGP990-V10d
My computer is running Windows Vista, I also tried a Window 7 and a Windows XP computer and still nothing for the USB.
I would appreciate any help guys, throw me a bone over here:laugh:

Same thing happened to my friend. No USB detection (the phone was charging through usb but nothing showed up on the pc). He tried everything then he called me (I have o2x too) , i tried everything you did too. His pc detected my o2x , but when he connected his (on the same cable) ... nothing .
Finally he remembered the phone had warranty and took it to tech suppport. First they reflashed it , but when he tried it home ... nothing . He took it to support again , they kept it for about 10 days and told him they had to change the motherboard.
Phone works now.
He was on stock froyo too , Vodafone Romania version.
Sent from my Optimus 2X using Tapatalk

On another threat I found more similar problems.
kohos said:
Sorry for the bump, but I got some update.
when dialing the above mentioned 1809#*990# in the Port menu, switching from default AP USB to AP/CP UART gave me life signs.
After switching to AP UART I linked the Unknown device driver to lgusbdiag.inf located in C:/ProgramFiles(x86)/LG United Mobile Driver.
Suddenly it started installing it and is now recognized as: LGE Platform Android USB Device.
Once disconnected I lose USB again, I'm able to recreate the first steps though even in default AP USB mode by now.
The only thing I need USB for is for flashing a custom recovery but the only thing I don't have is ADB somehow : / Clockwork telling me: device not found.
Any help on this one?
Click to expand...
Click to collapse
I tried this, but unfortunately it didn't work, I can't even see my device under Manage/Device Manager.
brymarti said:
i tried that but it only charge
theres a weird thing in my cp when i switch to cp uart my o2x says it charging even i dont connect it to my pc or charge it
Click to expand...
Click to collapse
I get the exact same symptom, as soon as I change from AP USB to AP/CP UART, my battery icon on my phone goes to charging, without the being plugged in
Well I'm pretty tired of monkeying around with this phone, but I really like phone and really don't want to change model. So I decided to order a brand new one:laugh:
I should be getting it within the next two week, hopefully that doesn't give me the same problem
I'll keep you guys updated.

Help??
A very good friend of us noobs toying with our O2x's are Paul O'Brien.
I could not get any other flashing tool to root my O2X other than his. Here is link to his guide:
modaco.com/topic/335474-25-mar-nvflash-stock-rom-release-v10b-dated-1300166062-15032011/#entry1645587
He also has the tool to completely restore your O2X back to factory standards, and in the O2X forum here you will find all the different stock roms, you need to get your phone back to these factory standards and restore your warranty.
After you flashed your phone and get ready to try all the marvellous ROMs, waiting on the other side, I can only recommend to purchase the PRO version of Clock Work Mod, it really brings out the fun in rooting your phone.
Seeing your description of your troubles, I think you have softwareproblems, more than hardware problems, so a complete flash and maybe restore, will likely solve many if not all of your problems.
Best regards
Mike
And dont forget to show your support to the developers, they do a marvellous job for us!!!

Thanks mike,
I followed the link you provided and did a lot of reading. So decided to try that method. No luck with that, my computer doesn't detect APX mode while holding down both volume keys. I tried it like 10 times every time holding the keys at different intervals. I even tried it on my wife's laptop running windows 7, didn't work either.
I did find a lot of good info on the link you posted.
Thanks, just waiting on my new O2x to come in the mail.

Possible solution
Some days ago, I also had a problem connecting my LG Optimus 2X to my PC (Windows 7).
I solved my problem using this instructions I found in the G2X forum, by conspirator_boff user (http://forum.xda-developers.com/showpost.php?p=15899923&postcount=10)
Similar issue. This worked for me on Win 7.
Uninstall the LG Drivers and reinstall the G2x 2.2 package from LG.COM /us/support/mc-support/mobile-phone-support.jsp (I can't post links)
Plug the phone in and go to Device Manager. There should be a USB Composite Device that is not properly installed. Right click it and select Update Driver Software.
Select 'Browse my computer', then 'Let me pick'. Choose have disk, and browse to where the LG Drivers are installed. Likely C:\Program Files\LG Electronics\LG United Mobile Driver\ and select lgbus9x.inf.
Then pick LGE Android Platform Composite USB Device from the list of drivers. Should be the top option. Hit next.
I let it sit for a minute while the drivers installed. Some things registered in device manager right away, the LGE USB Modem for one. But, the drives didn't. Unplugged the phone, plugged it back in, and the drives popped up under Portable Devices.
Click to expand...
Click to collapse
I think it's an issue from the newest LG Drivers because when I first tried to connect it a year ago I had no problems.
Hope it helps.

hurtads said:
Thanks mike,
I followed the link you provided and did a lot of reading. So decided to try that method. No luck with that, my computer doesn't detect APX mode while holding down both volume keys. I tried it like 10 times every time holding the keys at different intervals. I even tried it on my wife's laptop running windows 7, didn't work either.
I did find a lot of good info on the link you posted.
Thanks, just waiting on my new O2x to come in the mail.
Click to expand...
Click to collapse
Good luck and I hope your new phone will behave properly.
Remember Paul also has tools for bringing your phone back to factory standards, so you keep your warranty.:good:
Enough said, good luck and remember our O2X is probably one of the easiest phones to try out different ROMs at and I have never enjoyed this little gadget as much as after I flashed it!!:
BR
Mike

Fixed
Sorry guys for the late update.
I received my new P990 about two weeks ago. As soon I pluged the phone into my computer it started installing the drivers and I was able to use my phone via the USB cable. Another thing I noticed, on this new phone when I pluged the USB cable, I noticed it went in nice and firm, on my old phone the cable seemed to be a little loose. Anyway it was definately a hardware issue with my phone. I'm pretty happy with 2x.

USB-connection (Smartflash, NVFlash, Data-transfer)

Hi,
I've search thru the forums and tried several things, but haven't found a solution.
My problem is that I no longer can make a USB-connection to my O2X.
The only thing that works in the micro-usb is charging. What I tried:
- Smartflash (power-up without battery while holding vol-)
- NVFlash (power-up without battery while holding both vol-buttons)
- Ordinary USB-connection (flash-drive)
- Cleaned it for dust
All of this was done on different windows machins (WinXP and Win7), all USB-ports and different USB-cables (inlcuding one that I know has worked before). Windows don't even show me the device.
The reason why I want to flash is that I think the current baseband (that I flashed) is not the best for my phone. So I want to try another baseband.
Do any of you have a suggestion on how to fix my phone or is the hardware toasted?
Best regards
Anders

Unable to install stock rom
DEAR MEMBERS
please help me i am running cm7.2 in my o2x and want to go back to stock rom.
i have downloaded smartflash tool and stock rom fls and bin files and done the entire procedure as mentioned in the guide
but when i press start button it asks to install odm which is not mentioned in the steps.
when i press yes nothing happens when i press no nothing happens.
please help me to get back to stock rom or else i may void my warranty.
once before i installed the stock rom by the procedure and was successful but this time i am unable

First uninstall lg software and lg usb drivers then first install LGUnitedMobileDriver_S498MA21_WHQL_ML_Ver_2.1.exe then run the SmartFlashTool_P990.exe then remove battery plug device in while holding volume down - and them try.

komunistvb said:
First uninstall lg software and lg usb drivers then first install LGUnitedMobileDriver_S498MA21_WHQL_ML_Ver_2.1.exe then run the SmartFlashTool_P990.exe then remove battery plug device in while holding volume down - and them try.
Click to expand...
Click to collapse
Thanks for your suggestion, already tried this. The problem is that Windows don't even pickup on my O2X when plugged in. No new devices in the Device Manager shows up.

aziz.chamadia said:
DEAR MEMBERS
please help me i am running cm7.2 in my o2x and want to go back to stock rom.
i have downloaded smartflash tool and stock rom fls and bin files and done the entire procedure as mentioned in the guide
but when i press start button it asks to install odm which is not mentioned in the steps.
when i press yes nothing happens when i press no nothing happens.
please help me to get back to stock rom or else i may void my warranty.
once before i installed the stock rom by the procedure and was successful but this time i am unable
Click to expand...
Click to collapse
Please don't hijack my thread!

Aduck79 said:
Thanks for your suggestion, already tried this. The problem is that Windows don't even pickup on my O2X when plugged in. No new devices in the Device Manager shows up.
Click to expand...
Click to collapse
Try going to Hardware and Sound and then Devices and Printers in the Control Panel. Maybe it'll show there.

Aduck79
You may try in a virgin PC where no USB drivers have been installed. Best would be format PC reinstalll WIN OS and try NVFLASH or SMARTFLASH after installing LG USB drivers. I have also faced similar problems and solved them in different PCs either friends or office. I somehow feel LGs drivers are badly written and not very smooth functioning. In fact I (and many others) have bricked O2X trying to upgrade to official GB updates by using LG PC suite and drivers.
This is only my suggestion. I did not had to format my PC any point of time. Don't curse me if this fails. This is only one of the trials and errors.

Maybe I should try from a Linux live-cd to check if it's windows or the phone who's acting strangely.
Sent from my LG Optimus 2X

I got the exact same problem and after searching the net there are a lot of people having the same issue too.
Don't want to sound negative but the majority never got it to run again. For some it automagically started working again.
I got it to run only on Stock Froyo, no stock GB and no ICS with all the ICS Kernels available.
The thing which helped me on Froyo was: http://forum.xda-developers.com/showpost.php?p=28985033&postcount=5
Unfortunately CM9 has no secret menu.
I once had it recognized with Jarvis Kernel on Paranoidandroid for a second and had a hotreboot. Then never again.
I'm pretty sure the PC and the LG Drivers make no difference in this case, as I got 5 different PCs running different OS for testing and they never made a difference.

Aduck79 said:
Hi,
I've search thru the forums and tried several things, but haven't found a solution.
My problem is that I no longer can make a USB-connection to my O2X.
The only thing that works in the micro-usb is charging. What I tried:
- Smartflash (power-up without battery while holding vol-)
- NVFlash (power-up without battery while holding both vol-buttons)
- Ordinary USB-connection (flash-drive)
- Cleaned it for dust
All of this was done on different windows machins (WinXP and Win7), all USB-ports and different USB-cables (inlcuding one that I know has worked before). Windows don't even show me the device.
The reason why I want to flash is that I think the current baseband (that I flashed) is not the best for my phone. So I want to try another baseband.
Do any of you have a suggestion on how to fix my phone or is the hardware toasted?
Best regards
Anders
Click to expand...
Click to collapse
I'm afraid without any USB connection at all you are pretty much out of luck I'd say

kohos said:
I got the exact same problem and after searching the net there are a lot of people having the same issue too.
Don't want to sound negative but the majority never got it to run again. For some it automagically started working again.
I got it to run only on Stock Froyo, no stock GB and no ICS with all the ICS Kernels available.
The thing which helped me on Froyo was: http://forum.xda-developers.com/showpost.php?p=28985033&postcount=5
Unfortunately CM9 has no secret menu.
I once had it recognized with Jarvis Kernel on Paranoidandroid for a second and had a hotreboot. Then never again.
I'm pretty sure the PC and the LG Drivers make no difference in this case, as I got 5 different PCs running different OS for testing and they never made a difference.
Click to expand...
Click to collapse
Does the ROM has anything to do with Smartflash- and NVflash-modes? My guess is that they have nothing to do with each other. So my problem should persist even though I try different ROMs. Correct me if I'm wrong.
I'll look into the Froyo-topic you linked to.

Strange. Now it suddenly works again. I didn't do anything from the last time. That's odd.

I don't think that the ROM specifically has to do with the problem.
Stock Froyo just happened to be the only ROM where switching USB connection modes made the device seen in device manager on Windows. (Although it required manual .inf driver clickery.)
I'm sure missing USB connectivity affects people in NVFlash as well.
In my case I can't do **** ranging from USB mass storage when booted up, ADB or NVFlash when booting.
However restoring to the Froyo nandroid makes everything working for me again.

oh oh, it looks like the same issue that i had... No PC-connection (Win/Linux) recognized the mobile via USB. No Chance to get it back to work.
I flashed back to stock (very difficult without NVFlash...) and then send it back LG Service for repearing. After three weeks i got it back. They changed the hole mainboard so i got a new IMEI but USB works now again.

zeonit said:
oh oh, it looks like the same issue that i had... No PC-connection (Win/Linux) recognized the mobile via USB. No Chance to get it back to work.
I flashed back to stock (very difficult without NVFlash...) and then send it back LG Service for repearing. After three weeks i got it back. They changed the hole mainboard so i got a new IMEI but USB works now again.
Click to expand...
Click to collapse
Yeah. It stopped working after I booted a couple of times
And it was only semi working, it didn't want to go into Smartflash-mode, only NVFlash and Flash-drive.

@aduck79,
Did you already try tonyp's modded adb drivers?
http://forum.xda-developers.com/showthread.php?t=1752074

aragorn7 said:
@aduck79,
Did you already try tonyp's modded adb drivers?
http://forum.xda-developers.com/showthread.php?t=1752074
Click to expand...
Click to collapse
Nope, as I'm quite sure that it's not a matter of drivers.
Windows don't even detect the phone. So I think that the phone doesn't present itself.
Sent from my LG Optimus 2X

Since you already tried changing cables, computers, and even windows & Linux, and since it works on and off, You're right - it isn't the rom nor the drivers. it does sound like the hardware is messed up where the cable connects.
Any chance you can get it serviced? Hope your warranty covers it.
Sent from my LG-SU660 using xda premium

Same problem, no solution
Hi,
I seem to have the same sort of problem with my phone.
I used to be able to connect my phone to my computer just fine until I upgraded it to Gingerbread. Or that is at least the last time the USB connection seemed to work.
I have looked all over the internet now to find a solution to the problem but can't find one. Hope you guys could help me on this.
My phone is an LG optimus 2x P990 with a stock ROM gingerbread 2.3.4
LGE Version LGP990-V20r
Kernel version 2.6.32.9
I've tried so far:
- rebooting phone and pc
- factory reset phone
- Use other pc's => didn't work
- Connect a samsung phone to my pc with my LG cable => did work
- uninstall and reinstall all the necessary drivers
- mass storage mode on and off
- Installed android SDK and looked for adb devices, none shown
- phone doesn't show in the computers device manager either
Although when I do connect the phone it starts charging and if I go to the tethering settings it does recognize the fact that it is connected through USB.
So why can't I get my PC to recognize the phone.
I really need it cause I would like to root my phone to install a custom ROM.
I have tried rooting it with Gingerbreak as well, but that doens't seem to work either.
Thanks for the help

I just made a recovery.log in CWM:
http://pastebin.com/yJw6LEmf
It mentions something about USB in the bottom. Maybe it's a software issue after all?
Sent from my LG Optimus 2X

Note 5 (N920I) USB/OTG Issue [No computer will recognise the device]

Ok ladies and gents,
I've been on a mission to root my Note 5 N920I for months now.
My problem is no computer will read/recognise the device. The Mac's seem to not even recognise it's plugged in, with Windows, no matter which driver I install it keeps telling me the "device descriptor failed blah blah blah". I managed to root my S4 very easily on Mac with Jodin3 so I know that it ain't no user error.
I've Googled and Googled ways to root without a computer or installing a custom recovery without root, but from what I understand I can't flash TWRP as recovery without a computer and therefore cannot root without a custom recovery.
I've Googled ways to fix the USB issue by making the xml file and putting it into the correct folder, but for that I need to be rooted. Right?
When she's plugged into a computer with USB debugging on or off nothing comes up in my notifications except for charging. I tried using the toolbox which I found on here (sorry can't remember the name) though it seemed like I was getting close, I couldn't get close enough before my temper got the better off me.
If my memory serves me correctly the OTG function worked when i first got the phone but didn't after the first update. My mate's Note 5 also has the same issue. I Googled it and seemed it was common issue on these phones.
I've tried to learn some Terminal/Command Prompt to see if I can fix it that way through Debian or whatever, only got as far as understanding it, kind of. Big ups to all you coders/programmers out there it really is an artform.
So PLZ PLZ can y'all help me, there has to be a way aside from setting this thing alight and getting a new phone.
My next mission, which I only embarked on a couple nights ago is unbricking my dad's Note 4 (N910G) that just hit the **** one day after spazzing out for a few days then would not turn on. I'm getting close though I haven't put much effort into that yet.
Any advice will be greatly appreciated, thanks in advance. ?

Anyone??

$pooLz said:
Anyone??
Click to expand...
Click to collapse
1)First of all have you enabled usb debugging and oem unlocking options enabled from developers options?
2)Install latest usb drivers for your model no on pc, use original usb cable to connect your phone
3) Try different usb hub-ports on your pc, it is recommended to use main-usb port to connect device properly which is mostly located backside of cpu cabinet
4)Does odin recognises ur device? If yes then you can flash twrp and cf autoroot both ( Sometimes Kies or smartswtich like programmes enforces device not be reognised, so uninstall them before trying to connect and flashing thorugh odin)
5)Try to update device drivers manually from Pc's administration
6) Try to connect your phone on another pc running windows and see if it recognises your device or not

I've tried all of that, i have a 09 Macbook Pro hand me down running Yosemite with Windows 8.1 Pro n just put Ubuntu on her today through Parallels. None of which recognise the phone being there.
I've plugged it into 2 HP PC's and both just keep telling "device descriptor failed". They're both kinda old too.
Unless someone has a specific driver they've made or found or could make me?? Clearly I'm a noob.
Closest I've found is https://github.com/452/USBHIDTerminal/wiki/How-to-enable-USB-host-API-support but still need root or system mounted as rw.
Any other ideas? Any ADB codes anyone could help me with ?